| 俞峥巍,孙 正.管桩贯入分层土体的阻力影响特性及预测[J].水运工程,2024,(11):188-194 |
| 管桩贯入分层土体的阻力影响特性及预测 |
| Influence characteristics and prediction of resistance of pipe-pile penetrating layered soil |
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| DOI： |
| 中文关键词: pipe-pile CEL method penetration resistance parameter analysis extreme value prediction |
| 英文关键词: |
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| 中文摘要: |
| Board insert machine is the main equipment of drainage board.In this paper,CEL numerical method is used to study the penetration resistance curve with depth when the pipe-pile of board insert machine penetrating layered soil.The influence parameters of pipe-pile penetration resistance are discussed by using Pearson model,and the magnitude of the penetration resistance is predicted and analyzed.The results show that the penetration resistance increases linearly with the increase of depth when the pipe-pile penetrating dredged soil layer,and the influence of different parameters on the slope is different.There is an obvious turning point in the penetration resistance curve of pipe-pile,and the position of the extreme resistance value is near the soil layer boundary,and the influence of parameter change on the extreme value is different.When the pipe-pile penetrates into the silt soil layer from the dredged soil layer,the penetration resistance decreases sharply and then basically remains unchanged.The correlation between the friction angle and the extreme value of penetration resistance is the greatest,and the correlation coefficient is 0.88.Finally,the analysis model is used to predict the value of penetration resistance under different parameter conditions,and the accuracy of the model is 0.91. |
| 英文摘要: |
| 管桩；CEL方法；贯入阻力；参数分析；极值预测 |
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